如何从烧瓶restful API返回图像



我想在处理完图像后返回图像。到目前为止,我已经能够将图像发送到服务器并进行处理。如何返回图像以便任何客户端都可以使用?

class ImageProcessing(Resource):

def __init__(self):
parser = reqparse.RequestParser()
parser.add_argument("image", type=werkzeug.datastructures.FileStorage, required=True, location='files')
self.req_parser = parser

def post(self):
image_file = self.req_parser.parse_args(strict=True).get("image", None)
if image_file:
image = image_file.read()
nparr = np.fromstring(image, np.uint8)
img = cv2.imdecode(nparr, cv2.IMREAD_COLOR)
img = process_img(img) 
shape=img.shape
return "Image recieved: Image size {}X{}X{}".format(shape[0],shape[1],shape[2])
else:
return "Image sending failed"

卷曲url:

curl -X POST -F 'image=@data/test.jpg' http://127.0.0.1:5000/processImage

如何返回处理后的图像?

没关系,我首先将图像转换为base64,然后将其作为字符串返回,从而解决了这个问题。

rawBytes = io.BytesIO()
img.save(rawBytes, "JPEG")
rawBytes.seek(0)
img_base64 = base64.b64encode(rawBytes.read())
response = {
"shape": shape,
"image": img_base64.decode(),
"message":"Image is BASE 64 encoded"        
}
return response,200

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